#include <iostream>

#include <unistd.h>
#include <pthread.h>

int cnt = 0;

pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;

void* Count(void* args)
{
    pthread_detach(pthread_self());

    uint64_t number = (uint64_t)args;

    while (true)
    {
        pthread_mutex_lock(&mutex);
        pthread_cond_wait(&cond, &mutex);

        std::cout << "number: " << number << " cnt: " << ++cnt << std::endl;

        pthread_mutex_unlock(&mutex);
        sleep(2);
    }
    return nullptr;
}


int main()
{
    for (uint64_t i = 0; i < 5; ++i)
    {
        pthread_t tid;
        pthread_create(&tid, nullptr, Count, (void*)i);
    }

    sleep(3);
    std::cout << "main thread control begin:" << std::endl;
    
    while (true)
    {
        sleep(1);
        pthread_cond_signal(&cond);
    }
    return 0;
}